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<p>[QUOTE=&quot;all_fakes, post: 113317, member: 55&quot;]So, it measures the angle between two objects?</p><p>Just some some thoughts....in celestial navigation, that would be a type of sextant, used for determining longitude at sea; used vertically.</p><p>A Wikipedia article <a href="https://en.wikipedia.org/wiki/Reflecting_instrument" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Reflecting_instrument" rel="nofollow">https://en.wikipedia.org/wiki/Reflecting_instrument</a></p><p>indicates that optical instruments for measuring angles are used <u>horizontally</u> at sea for hydrographic surveys; and on land, as a surveyor&#039;s sextant.</p><p><br /></p><p>This has no attachment point for a tripod, and none of the black plugs unscrew to expose a mounting point?</p><p>And it would seem to have some military use.....I&#039;m stumped.[/QUOTE]</p><p><br /></p>

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